brianc1959
New member
Hi Doug:Hi Brian,
Actually, I am interested in all focal lengths. Case in point the 75-150 series e, or the 200mm f4, 105mm f2.5... And then on the shorter end, mostly because of the characteristics of the lenses themselves (28mm f2, 20mm f3.5). The only midrange lens I have interest in is the 50mm f1.4 which gives me a crazy f1.0 (or 1.2 if I use the 50mm f1.8).
A non m4/3 question regarding the speedbooster on Fuji or Sony cameras. Your comments above seems to imply that they will potentially suffer from corner softness more than on m4/3 (assuming because of the different crop factor and the fact that on those systems, the entire image circle of a FF lens is used when a speed booster is attached)? Would this also be true of using a DX lens on m4/3 then (the corner softness)?
Thanks,
Doug
I've really enjoyed seeing your images with various Nikkors on the SB.
The SpeedBooster will actually reveal slightly more field of view in a DX lens mounted to m4/3 than when the same lens mounted to a DX camera. In some cases this can cause vignetting, especially in ultrawide lenses that have permanently fixed lens hoods like the Sigma 8-16mm. In other cases the whole image will look great and you just get a little extra FOV as a bonus.
I'm personally very interested in seeing how the new 18-35/1.8 DX lens behaves with a SpeedBooster since the combination will be an amazing 12.5-25mm f/1.2 for m4/3. Another interesting lens I haven't checked out yet is the Sigma 30/1.4 DX, which would become a nice 21mm f1/0.